Question

calculate the mean by step deviation method of the scores 20.students in a mathematical test

marks 10-20,20-30,30-40,40-50,50-60

no. of students 2 4 7 6 1​

Answer 1

Answer:

• mean=sum of observation/number of observations
• mean=10+20+30+40+60+50/5

Step-by-step explanation:

mean=210/5

=42